Questions
OBJECTIVE: State benefits and
drawbacks of adopting a web framework in designing a Java EE application.
|
Q1. Which of the
following are benefits of adopting a web framework?
Answer choices: (Select
2)
A. Automate session management
B. Enables UI templating
C. Disable code reuse
D. Disable security
Q2. Which of the
following are drawbacks of using a web framework?
Answer choices: (Select
2)
A. Skills upgrade may be at a
cost
B. Choosing between many
choices is difficult
C. Performance is better
D. Clear direction to choose a
framework
Q3. You have to support
both mobile phones and browser clients in the application being developed.
Which technology would you choose?
Answer choices: (Select
best answer)
A. JSP
B. JSP with EL
C. JSF
D. JSP with JSTL
Q4. You have to access
the existing inventory system using web services. Which type of architecture will
you suggest?
Answer choices: (Select
best answer)
A. JSP with stateless session
beans
B. JSF with stateless session
beans
C. JSF with JAX-WS
D. JSF with JMS
Q5. You have an
existing application written using an earlier version of JEE platform. The
client wishes to improve the maintainability of the application. Which strategy
would you suggest?
Answer choices: (Select
best answer)
A. Rewrite using JSF, EJB and
JPA
B. Rewrite using JSP, EJB and
JPA
C. Apply best practices on
existing application
D. Rewrite using JSF, JMS, EJB
and JPA
OBJECTIVE: Explain standard
uses for JSP pages and servlets in a typical Java EE application.
|
Q1. You are thinking of
recommending Java Server Pages as the presentation tier technology. Which of
the following key features would you recommend?
Answer choices: (Select
3)
A. Template content
B. Static content
C. Ability to extend tags
D. Scripting elements
Q2. You are convincing
the client that JSP technology can be hosted on any platform, run on any web
server or a Java EE application server and accessed from any web browser. Which
benefit of JSP is being talked about?
Answer choices: (Select
best answer)
A. Tool support
B. Write once, run anywhere
C. Tag library reuse
D. Separation of web developer
and web designer roles
Q3. You want to
emphasize on the use of JSP technology as the choice of presentation tier
technology. Which of the following benefits will you highlight?
Answer choices: (Select
3)
A. Support for expressions,
scripting and actions
B. Always the choice for
front-end technology
C. Separation of dynamic and
static content
D. Reuse of components and tag
libraries
Q4. You are making a
note of the available options when a JSP page is compiled. Which of the
following options will you note?
Answer choices: (Select
2)
A. On first request
B. On every request
C. At deployment time
D. During server startup
Q5. You are in a
meeting where discussion is based on the use of tag libraries. Which of the
following points will you make?
Answer choices: (Select
3)
A. Custom actions
B. Static content
C. Listener classes
D. Validation
Q6. Which of the
following technologies are competitive technologies of Java Servlet technology?
Answer choices: (Select
3)
A. CGI
B. JSP
C. Netscape Server API
D. Apache Modules
Q7. Which of the
following Servlet lifecycle methods are executed once?
Answer choices: (Select
2)
A. init
B. service
C. destroy
D. doGet
Q8. Your application
design requires a pool of servlet instances. Which interface should you inherit
to force this property?
Answer choices: (Select
best answer)
A. SingleThreadModel
B. MultipleThreadModel
C. No interface
D. SingleProcessModel
Q9. Which of the
following are exceptions thrown by a Servlet?
Answer choices: (Select
2)
A. ServletException
B. UnavailableException
C. ServletUnavailableException
D. ServletError
Q10. Which of the
following are session tracking mechanisms?
Answer choices: (Select
best answer)
A. Cookies
B. URL rewriting
C. HTTPSession
D. Form fields
OBJECTIVE: Explain standard uses for JavaServer Faces
components in a typical Java EE application.
|
Q1. You are discussing
the key features of JSF with your team. Which points will you highlight?
Answer choices: (Select
3)
A. Reuse existing UI components
B. Manages UI state across
requests
C. Custom UI components
difficult to build
D. Easy development of custom
UI components
Q2. You are negotiating
with the client about the challenges associated with the web applications and
how JSF addresses those challenges. Which points will you discuss?
Answer choices: (Select
3)
A. Support form processing
B. Validation
C. No event model
D. Error handling
Q3. You are discussing
the roles that a JSF developer plays. Which of the following roles are valid?
Answer choices: (Select
3)
A. Page author
B. Application architect
C. Component writer
D. Tool provider
Q4.
Which
of the following are different scenarios that occur in a JSF application?
Answer choices: (Select
3)
A. Non-faces request generates
faces response
B. Faces request generates
faces response
C. Faces request generates
non-faces response
D. Non-faces request generates
non-faces response
Q5. Which phase of JSF
life cycle builds the view of the page, wires event handlers and validators?
Answer choices: (Select
best answer)
A. Restore view
B. Apply request values
C. Invoke application
D. Render response
Q6. Which phase of JSF
life cycle uses the decode method to extract new value from the request
parameters?
Answer choices: (Select
best answer)
A. Restore view
B. Apply request values
C. Invoke application
D. Render response
Q7. Which phase of JSF
life cycle processes all validators registered in the component tree?
Answer choices: (Select
best answer)
A. Restore view
B. Apply request values
C. Process validations
D. Render response
Q8. Which phase of JSF
life cycle walks the component tree and sets the corresponding server-side
properties to local value?
Answer choices: (Select
best answer)
A. Update model values
B. Apply request values
C. Process validations
D. Render response
Q9. Which phase of JSF
life cycle handles application-level events?
Answer choices: (Select
best answer)
A. Update model values
B. Invoke applications
C. Process validations
D. Render response
Q10. Which phase of JSF
life cycle renders the page?
Answer choices: (Select
best answer)
A. Update model values
B. Invoke applications
C. Process validations
D. Render response
OBJECTIVE: Given a system requirements definition, explain
and justify your rationale for choosing a web-centric or EJB-centric
implementation to solve the requirements. Web-centric means that you are
providing a solution that does not use EJB components. EJB-centric solution
will require an application server that supports EJB components.
|
Q1. A large retail
customer has a requirement for a complex transaction processing system with
existing system integration. As an architect, what would you recommend?
Answer choices: (Select
best answer)
A. EJB-centric system with no
external system
B. Web-centric system with
external system
C. EJB-centric system with
external system
D. Web-centric system with no
external system
Q2. You are the
architect of a small B2C website where ease of development is the primary
concern. Which type of architecture would you recommend?
Answer choices: (Select
best answer)
A. EJB-centric system with no
external system
B. Web-centric system with
external system
C. EJB-centric system with
external system
D. Web-centric system with no
external system
Q3. A banking system
requires role based security for the mortgage website. Which type of
architecture would you recommend?
Answer choices: (Select
best answer)
A. EJB-centric system with no
external system
B. Web-centric system with
external system
C. EJB-centric system with
external system
D. Web-centric system with no
external system
Q4. The development
team does not have EJB skills. The website you are developing requires
integration with an inventory system. Which type of architecture would you
recommend?
Answer choices: (Select
best answer)
A. EJB-centric system with no
external system
B. Web-centric system with
external system
C. EJB-centric system with
external system
D. Web-centric system with no
external system
Q5. A back office
system is required to update the details in a banking system. Which type of
architecture would you recommend?
Answer choices: (Select
best answer)
A. EJB-centric system with no
external system
B. Web-centric system with
external system
C. EJB-centric system with
external system
D. Web-centric system with no
external system
Answers
OBJECTIVE: State benefits and drawbacks of adopting a
web framework in designing a Java EE application.
|
Q1. Which of the following are benefits of adopting a
web framework?
Answer choices: (Select
2)
A. Automate session management
B. Enables UI templating
C. Disable code reuse
D. Disable security
Correct Answer: A
and B
Explanation: Web frameworks help in implementing features such
as action handlers, validators, transactions, security, automate session
management and enables UI templates. It does promote code reuse and does not
disable security. Hence options A and B are correct, and C and D are incorrect.
Q2. Which of the following are drawbacks of using a
web framework?
Answer choices: (Select
2)
A. Skills upgrade may be at a
cost
B. Choosing between many
choices is difficult
C. Performance is better
D. Clear direction to choose a
framework
Correct Answer: A
and B
Explanation: The drawbacks of adopting a web framework include
costly skill upgrade. Hence choosing between several web frameworks is
difficult. There is a performance overhead and there is no clear direction in
choosing a web framework. Sometimes a web framework may be overkill, and it may
not be required. Hence options A and B are correct, and C and D are incorrect.
Q 3. You have to support both mobile phones and browser
clients in the application being developed. Which technology would you choose?
Answer choices: (Select
best answer)
A. JSP
B. JSP with EL
C. JSF
D. JSP with JSTL
Correct Answer: C
Explanation: A JSF-based architecture is preferred because the
renderers support both mobile devices and browser clients. Hence option C is
correct. The other options are invalid.
Q 4. You have to
access the existing inventory system using web services. Which type of
architecture will you suggest?
Answer choices: (Select
best answer)
A. JSP with stateless session
beans
B. JSF with stateless session
beans
C. JSF with JAX-WS
D. JSF with JMS
Correct Answer: C
Explanation: A stateless session bean may not be required in
the current context and JMS may not be required to access the web services. The
best answer is option C, which uses JSF with JAX-WS technology to access the
web service. The other options are incorrect.
Q5. You have an existing application written using an
earlier version of JEE platform. The client wishes to improve the
maintainability of the application. Which strategy would you suggest?
Answer choices: (Select
best answer)
A. Rewrite using JSF, EJB and
JPA
B. Rewrite using JSP, EJB and
JPA
C. Apply best practices on
existing application
D. Rewrite using JSF, JMS, EJB
and JPA
Correct Answer: C
Explanation: Since the client wishes to improve the
maintainability of the application, the best practices should be applied and
the application needs to be re-factored. The other options for rewrite may not
be a suitable choice considering the cost and effort. Hence option C is
correct, and the other options are incorrect.
OBJECTIVE: Explain standard
uses for JSP pages and servlets in a typical Java EE application.
Q1. You are thinking of recommending Java Server pages
as the presentation tier technology. Which of the following key features would
you recommend?
Answer choices: (Select
3)
A. Template content
B. Static content
C. Ability to extend tags
D. Scripting elements
Correct Answer:
A, C and D
Explanation:
Q2. You are convincing the client that JSP technology
can be hosted on any platform, run on any web server or a Java EE application
server and accessed from any web browser. Which benefit of JSP is being talked
about?
Answer choices: (Select
best answer)
A. Tool support
B. Write once, run anywhere
C. Tag library reuse
D. Separation of web developer
and web designer roles
Correct Answer: B
Explanation: Write once, run anywhere feature of Java is
applied to JSP technology as well because components can be written on any
platform, run on any Java EE server and accessed from any browser. Hence option
B is correct. The other choices are benefits of JSP but not relevant to the
question.
Q3. You want to emphasize on the use of JSP technology
as the choice of presentation tier technology. Which of the following benefits
will you highlight?
Answer choices: (Select
3)
A. Support for expressions,
scripting and actions
B. Always the choice for
front-end technology
C. Separation of dynamic and
static content
D. Reuse of components and tag
libraries
Correct Answer:
A, C and D
Explanation: JSP benefits include support for expressions,
scripting and actions. It lets you separate dynamic and static content. Also,
one can reuse components and tag libraries speeding up development effort.
Hence options A, C and D are correct. JSP technology is not always the choice
for front-end technology making option B incorrect.
Q4. You are making a note of the available options when
a JSP page is compiled. Which of the following options will you note?
Answer choices: (Select
2)
A. On first request
B. On every request
C. At deployment time
D. During server startup
Correct Answer: A
and C
Explanation: JSP pages are compiled during deployment or when a
first request arrives. Hence options A and C are correct. JSP page is not
compiled on every request or during server startup making options B and D
incorrect.
Q5. You are in a meeting where discussion is based on
the use of tag libraries. Which of the following points will you make?
Answer choices: (Select
3)
A. Custom actions
B. Static content
C. Listener classes
D. Validation
Correct Answer:
A, C and D
Explanation: Tag libraries deliver custom actions, listener
classes and validation. Static content may not be provided by tag libraries.
Hence options A, C and D are correct, and B is incorrect.
Q6. Which of the following technologies are competitive
technologies of Java Servlet technology?
Answer choices: (Select
3)
A. CGI
B. JSP
C. Netscape Server API
D. Apache Modules
Correct Answer:
A, C and D
Explanation: Common Gateway Interface (CGI), Netscape Server
API (NSAPI) and Apache Modules, are competitive technologies of Java Servlet
technology. Hence options A, C and D are correct. Option B is incorrect because
JSP is an alternate technology.
Q7. Which of the following Servlet lifecycle methods
are executed once?
Answer choices: (Select
2)
A. init
B. service
C. destroy
D. doGet
Correct Answer: A
and C
Explanation: The Java Servlet lifecycle methods init and
destroy are executed once in the lifecycle. Hence options A and C are correct.
The options B and D are incorrect because it is not executed once.
Q8. Your application design requires a pool of servlet
instances. Which interface should you inherit to force this property?
Answer choices: (Select
best answer)
A. SingleThreadModel
B. MultipleThreadModel
C. No interface
D. SingleProcessModel
Correct Answer: A
Explanation: Java Servlets implement the SingleThreadModel
interface which guarantees there is one thread at a time executing the service
method. Servlet containers may maintain a pool of servlet instances. Hence
option A is correct. The other options are invalid.
Q9. Which of the following are exceptions thrown by a
Servlet?
Answer choices: (Select
2)
A. ServletException
B. UnavailableException
C. ServletUnavailableException
D. ServletError
Correct Answer: A
and B
Explanation: A Servlet may throw either ServletException or
UnavailableException when the service method is executed. Hence options A and B
are correct. The other options C and D are incorrect.
Q10. Which of the following are session tracking
mechanisms?
Answer choices: (Select
3)
A. Cookies
B. URL rewriting
C. HTTPSession
D. Form fields
Correct Answer:
A, B and C
Explanation: Session tracking mechanisms include cookies, URL
rewriting and HTTP session which makes options A, B and C valid choices. The
option D is incorrect because form fields are not used to track sessions.
OBJECTIVE: Explain
standard uses for Java Server Faces components in a typical Java EE
application.
|
Q1. You are discussing the key features of JSF with
your team. Which points will you highlight?
Answer choices: (Select
3)
A. Reuse existing UI components
B. Manages UI state across
requests
C. Custom UI components
difficult to build
D. Easy development of custom
UI components
Correct Answer:
A, B and D
Explanation: The key features of JSF include the ability to
reuse existing UI components, maintain UI state across requests and easily
developed custom UI components. Hence options A, B and D are correct answers.
Option C is incorrect because custom UI components are not difficult to build.
Q2. You are negotiating with the client about the
challenges associated with the web applications and how JSF addresses those
challenges. Which points will you discuss?
Answer choices: (Select
3)
A. Support form processing
B. Validation
C. No event model
D. Error handling
Correct Answer:
A, B and D
Explanation: JSF has support for form processing, validation
and error handling. It also has a strongly typed event model. Hence options A,
B and D are correct, and option C is incorrect.
Q3. You are discussing the roles that a JSF developer
plays. Which of the following roles are valid?
Answer choices: (Select
3)
A. Page author
B. Application architect
C. Component writer
D. Tool provider
Correct Answer: A, C
and D
Explanation: The roles played by a JSF developer include a page
author, component writer, application developer, tool provider and implementer.
Hence options A, C and D are correct, and option B is incorrect.
Q4. Which of the following are different scenarios
that occur in a JSF application?
Answer choices: (Select
3)
A. Non-faces request generates
faces response
B. Faces request generates
faces response
C. Faces request generates
non-faces response
D. Non-faces request generates
non-faces response
Correct Answer:
A, B and C
Explanation: The different scenarios that may occur in a JSF
application include a faces and non-faces request generating a faces response
and faces request generating a non-faces response. Hence options A, B and C are
correct, and option D is incorrect.
Q5. Which phase of JSF life cycle builds the view of
the page, wires event handlers and validators?
Answer choices: (Select
best answer)
A. Restore view
B. Apply request values
C. Invoke application
D. Render response
Correct Answer: A
Explanation: The restore view phase is the first phase of the
JSF lifecycle which builds the view of the phase, wires event handlers and
validators, and saves the view in the FacesContext instance which contains all
information needed to process a single request. Hence option A is the correct
choice. All other options are incorrect.
Q6. Which phase of JSF life cycle uses the decode
method to extract new value from the request parameters?
Answer choices: (Select
best answer)
A. Restore view
B. Apply request values
C. Invoke application
D. Render response
Correct Answer: B
Explanation: The apply request values phase is the second phase
in the JSF lifecycle where the decode method is used to extract the new value
of the component from the request parameters. Hence option B is correct. All
other options are incorrect.
Q7. Which phase of JSF life cycle processes all
validators registered in the component tree?
Answer choices: (Select
best answer)
A. Restore view
B. Apply request values
C. Process validations
D. Render response
Correct Answer: C
Explanation: The process validations phase processes all
validators in the component tree. It examines the component attributes that
specify the rules for the validation and adds error messages if the local value
is invalid. Hence option C is correct. All other options are incorrect.
Q8. Which phase of JSF life cycle walks the component
tree and sets the corresponding server-side properties to local value?
Answer choices: (Select
best answer)
A. Update model values
B. Apply request values
C. Process validations
D. Render response
Correct Answer: A
Explanation: The update model values phase traverses the
component tree and sets the server-side object properties to local value of the
component. It only updates the bean properties pointed by input components
value attribute. Hence option A is correct. All other options are incorrect.
Q9. Which phase of JSF life cycle handles
application-level events?
Answer choices: (Select
best answer)
A. Update model values
B. Invoke applications
C. Process validations
D. Render response
Correct Answer: B
Explanation: The invoke applications phase handles
application-level events. Hence option B is correct. All other options are
incorrect.
Q10. Which phase of JSF life cycle renders the page?
Answer choices: (Select
best answer)
A. Update model values
B. Invoke applications
C. Process validations
D. Render response
Correct Answer: D
Explanation: The render response phase is responsible for
rendering the page. The components will render as the JSP container traverses
the tags in the page. Hence option D is correct. All other options are
incorrect.
Objective: Given a system requirements definition, explain
and justify your rationale for choosing a web-centric or EJB-centric
implementation to solve the requirements. Web-centric means that you are
providing a solution that does not use EJB components. EJB-centric solution
will require an application server that supports EJB components.
Q1. A large retail customer has a requirement for a
complex transaction processing system with existing system integration. As an
architect, what would you recommend?
Answer choices: (Select
best answer)
A. EJB-centric system with no
external system
B. Web-centric system with
external system
C. EJB-centric system with
external system
D. Web-centric system with no
external system
Correct Answer: C
Explanation: EJB-centric systems are candidates where
transaction processing is required. The existing external system will need to
be integrated using Java EE technology. Hence the option C is the right answer.
All other options are incorrect.
Q2. You are the architect of a small B2C website where
ease of development is the primary concern. Which type of architecture would
you recommend?
Answer choices: (Select
best answer)
A. EJB-centric system with no
external system
B. Web-centric system with external
system
C. EJB-centric system with
external system
D. Web-centric system with no
external system
Correct Answer: D
Explanation: When ease of development is the primary concern
and a small B2C site needs to be developed, a Web-centric architecture is
recommended. Hence option D is correct. All other options are incorrect.
Q3. A banking system requires role based security for
the mortgage website. Which type of architecture would you recommend?
Answer choices: (Select
best answer)
A. EJB-centric system with no
external system
B. Web-centric system with
external system
C. EJB-centric system with
external system
D. Web-centric system with no
external system
Correct Answer: A
Explanation: EJB-centric systems can successfully satisfy the
requirement of role-based security. Here, no external system integration is
required unless explicitly specified. Hence option A is correct. All other
options are incorrect.
Q4. The development team does not have EJB skills. The
website you are developing requires integration with an inventory system. Which
type of architecture would you recommend?
Answer choices: (Select
best answer)
A. EJB-centric system with no
external system
B. Web-centric system with
external system
C. EJB-centric system with
external system
D. Web-centric system with no
external system
Correct Answer: B
Explanation: One of the primary concerns making a technology
decision is to check the skills of the development team. If the development
team does not have EJB skills, it is recommended to use a Web-centric
architecture. The architecture can be integrated with an inventory system.
Hence option B is the correct answer. All other options are incorrect.
Q5. A back office system is required to update the
details in a banking system. Which type of architecture would you recommend?
Answer choices: (Select
best answer)
A. EJB-centric system with no
external system
B. Web-centric system with
external system
C. EJB-centric system with
external system
D. Web-centric system with no
external system
Correct Answer: A
Explanation: The requirement is to update the details in the
banking system via MDBs. Hence option A is the correct choice. The other
options do not address the question.
